Choo Sung-hoon otherwise known by his Japanese name, Yoshihiro Akiyama, is a fighter for ONE Championship and UFC. While some of his fans remember him by his moniker, Sexyama, the celebrity is also known to be part of the original cast of The Return Of Superman, along with his adorable daughter Choo Sa-rang.

Another contestant that everyone can’t stop talking about is Yun Sung-bin. The skeleton racer brought home a gold medal at the PyeongChang 2018 Winter Olympics and he’s proven to be one of the strongest contestants in the show as well. During his free time, he enjoys spending time with his dog and family, and he also has his own YouTube channel where he has done videos with the other contestants from the show.

Think he looks familiar? Cha Hyun-seung rose to fame when he first made his debut in Netflix’s hit reality dating series, Single’s Inferno (Season 1). Prior to that, the star was known as a professional backup dancer to K-pop stars like Sunmi.

Shim Eu-ddeum, best known for her amazing performance in the show’s consolation match, is a fitness and exercise influencer with over 1.41 million subscribers on YouTube. But aside from making videos for her channel, she’s also a Pilates instructor and a model as well.

According to what she revealed in the show, Jang Eun-sil started working out 20 years ago and has been a professional wrestler for the past seven years. With a massive following of 145,000 followers on Instagram, the wrestler also enjoys making workout videos on YouTube and has amassed over 92,500 subscribers on her channel.

Does anyone remember this farmer? Because we do. Before he started farming, Kim Kyun-jin revealed that he was already a fitness buff himself. On his Instagram, you’ll find photos of his farm produce along with other shots of him working out in the gym.

Choi Hyun-mi remarkably won the WBA World Featherweight title on her professional debut back in 2008 and has since held the record of 18 wins, one tie, and zero losses. From her Instagram, you can tell that Choi Hyun-mi also enjoys spending her time doing different sports including skiing and swimming.

Jo Jin-hyeong is definitely one of the contestants that’s not to be missed. With such a strong build, it’s no wonder that he’s one of the top few participants in the show. Judging from his Instagram, you can tell that the car dealer also enjoys working out and spending time with his friends.

Song A-Reum, along with her husband, Kim Kang-min, are professional bodybuilders and fitness influencers. On Song A-Reum’s Instagram, you’ll find that she enjoys posting photos and videos of her and her daughter, as well as other shots of her modelling and dancing.

Kim Kang-min is always sweating it out – be it on the show or on his YouTube channel. The professional bodybuilder enjoys posting vlogs that feature different aspects of his life, including his workouts with his friends and other candid videos with his family.

Based in LA, California, the South Korean expat is best known for his travel vlogs that he posts regularly on his own YouTube channel. What’s more, he also runs his own athleisure label named Fitness Paradise and he was also in a dating show called Love Alarm prior to his appearance in Physical: 100.

Did you know that Kim Sik also trains his co-star Yun Sung-bin in skeleton racing? Besides his impressive physique, the national team skeleton coach also competed as a bobsledder in the 2014 Olympics in Sochi.

Viewers call him Jay Chou’s doppelganger. Otherwise known as the top national wrestler in Korea, Nam Kyung-Jin also enjoys climbing, fishing and weightlifting, and he also has his own YouTube channel where he posts videos of his workouts and his life as a wrestler.